银鲫两个蛋白合成相关基因全长cDNA的克隆及其特征分析

通过构建雌核发育银鲫心跳期SMARTcDNA质粒文库并从文库中随机挑选克隆测序 ,克隆得到银鲫翻译起始因子 3亚单位 2 (GTIF3 S2 )和翻译延伸因子 1亚单位α(GEF 1α)基因全长cDNA。银鲫翻译起始因子 3亚单位 2基因cDNA全长 12 80bp ,开放阅读框位于 117— 10 91bp之间 ,编码 32 5个氨基酸。其推断的氨基酸序列存在三个WD结构域。该基因在鱼类中为首次报道。银鲫翻译延伸因子 1亚单位alpha基因cDNA全长 1784bp ,开放阅读框位于82— 14 6

Removal of Iron During Copper Sulfate Production from Bioleaching Reextraction Solution

［中文文摘］利用三种方法分别对某铜矿山生物浸铜反萃液生产饲料级五水硫酸铜的重要步骤———除铁工艺进行了深入研究,结果表明:采用黄铵铁矾法除铁,控制温度在95℃、pH=1 6,除铁率可以达到91 2%;采用氢氧化铁沉淀法,于70℃,pH=3 8的条件下,除铁率可达98 1%。但上述方法除+、Na+和Ca2+等杂质带入硫酸铜溶液;采用一步结晶法,控制结晶温度在60℃、结铁过程会将NH4晶时间为6h,除铁率可以达98 5%,该工艺操作简单,产品符合饲料级硫酸铜的国家标准。［英文文摘］Iron removal is crucial to the process of feed-additive copper sulfate pentahydrate production from bioleaching reextraction solution.In this paper,three iron removal methods were examined.A series of experiments were conducted in different conditions and the results indicated that when iron was removed by precipitating in the form of ammonium jarosite(95 ℃,pH=1.6),the iron removal efficiency was 91.2%,while by precipitating in the form of ferric hydroxide(70 ℃,pH=3.8),the iron removal efficiency was 98.1% However ,by these two methods ,the use of oxidant and neutralization reagents introduced unwanted NH+4 ,Na + ,Ca2 + into copper sulfate solution. Crystallizating copper sulfate from reextraction solution ,a simple process ,could remove iron effectively without adding any additives and the iron removal efficiency could reach 98.5% under the condition of 60 ℃and 6 h ,and the quality of copper sulfate met national standards of feed additive.福建紫金矿业股份有限公司资助项

同位素Ni靶膜制备工艺研究

对同位素Ｎｉ靶的制备工艺进行了研究。通过对电沉积过程中影响靶膜生长质量的因素与靶膜厚间的关系实验，确定出了最佳制备工艺条件。用最佳工艺条件制备出了品质优良的大面积Ｎｉ同位素自支撑靶膜。The optimal preparing technology of isotope Ni target film by electrodepositing method is studied and described in the paper. By means of this technology, a high-grade self-supported film of isotope Ni with a largy area is obtained

同位素~(106)Cd金属自支撑靶的制备及废靶的再生利用

用滚压技术制备出同位素１０６Ｃｄ自支撑靶，并成功地利用破靶膜的再生方法。制备出可供使用的靶膜

~(92)Mo同位素氧化物靶的制备

用真空蒸发法、分子镀法和离心沉积法制备９２ Ｍｏ 同位素氧化物靶，介绍了各法的优点、存在的问题和解决途径。In order to prepare a target of 92 MoO 3, vacuum evaporation,centrifuge precipitation and molecular plating techniques are used.The advantages,problems as well as its solution are discussed for three methods

快中子金属锂靶的制备方法

介绍了供多中子转移反应实验用的金属 Li 靶膜的制备方法及条件；金属 Li 表面石蜡油的清洗及清洗剂的选择；简述了 Li 靶的保存方法